Sheet-metal can



May 15, 1923.

1,455,182 F. WESTERBECK SHEET METAL CAN Filed Dec. 12. 1921 I I l7 Patented May 15, 1923.

PATENT @FFECE.

' FREDERICK WESTERBEGK, OF ST. LOUIS, MISSOURI.

SHEET-METAL can.

Application filed December 12, 1921. Serial No. 521,644.

.To all whom it may concem:

Be it known that I, FREDERICK WnsrER- BECK, a citizen of the United States of 'America, aresident of the city of St. Louis and State ofMissouri, haveinvented certain new and useful Improvements in Sheet- Metal Cans, of which the following is a full,

@;clear, and. exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements 1n sheet'metal cans, and more particularly to a can adapted to receive closure-removing tool whereby the closure can be easily forced from the can body. The main object is to produce a very strong can. of this kind having. its elements arranged to provide an effective seal between the closure and thecan body. By bending the sheet metal as will .be' hereinafter described, I produce rein-- forcing elements which very effectively strengthen the closure and can body, so

these parts can be made of very thin, inexrtpensive sheet metal. The closure, has a marupwardly and folded to producea strongginal flange which forms a sealoutside of the can, and a portionof this flange is bent tool-receiving member, which lies. entirely i above the upper edge of the canto provide ing the features of this invention. ig. II is a top view of a portion of the.

a space: for a closure-removing tool.

Fig. I is a side elevation of a can embodycan showing the part of the closure to which the closure-removing tool is applied.

Fig. .III is an enlarged fragmentary section on the line III-III in Fig. I.

Fi IV is an enlarged fragmentary section 311 the line IV- IV in Fig. I p A designates a sheet metal can body, and B designates a closure applied to said body. The upper margin of the can body is curled inwardly to form an internal annular head 1 within the can body, said head being substantially circular in cross section. The edge of the metal forming the bead is preferably separated from the side wall of the can, as shown in Figs. III and IV, so as to permit the head to yield and conform to the seats on the closure. I

The closure may be provided with a central portion 2 pressed upwardly from a flat, horizontal web 3 igs. II and III) and a marginal portion embracing and closely fitted to the annular bead 1, to form a seal between the closure and the can body. More specifically stated, the closure has an annular sealing web 4 engaging the inner side of the annular head 1 to form an annular seal inside of the can. This sealing web 4 extends downwardly from the bead 1 to the flat Web 3. The closure is provided with a marginal flange having a 2-ply downturned portion 5 engaging the, outer sideof the bead 1 and a relativelystiff, outwardly extending portion L5having a plurality of folds (Figs. I and cated entirely above and separated from the top of the annular beadl, so as to provide an open space for a closure-removing tool. There are fourthicknesses ofv metal in the folded portion 5' of the marginal flange (Fig. IV),and these folds merge into the 2- ply downturned portion 5 of the marginal flange. This produces an extremely strong and rigid portion well adapted to receive a screw driver, or other suitable tool, which is inserted between the portion 5 and the top of the strong head 1 to force the closure from the can body.

'As shownmost clearly by Fig. III, the closure embraces the annular head 1 to form seals at the inner and outer sides of said head, and Fig. IV shows that the folded portion 5 of the closure is formed by metal which, extends upwardly and outwardly from the annular sealing web 4. However, the sealing web ,4 cooperates with the inner side of bead 1 to form a continuous annularseal, which is not impaired by the outwardly extending folded portion 5'.

The downturned portion5 of the marginal flange extends almost entirely around the can, and the yieldable bead 1 is confined under pressure between said downturned portion and the sealing web 4, so a very effective seal is produced between the closure and the bead. Furthermore, although the can and closure may be made of extremely thin sheet metal, they will not be torn or mutilated by a closure-removing tool between the outwardly extending folded portion 5 and the head 1. The stresses resulting from an upward thrust of the tool will be primarily borne by the folded portion 5' and the bead 1, and these stresses will be transmitted from said folded portion to the downturned 2-ply portion of the marginal closure flange.

Iclaim: 7 p i 1 A sheet metal can havingflan internal annular closure seat on the inner face of its upper edge, and .aclosure embracing said upper edge, said closure having an annular sealing Web engaging sald lnternalannular i seat to form a seal inside of the can, said closure also havingv a'marginal flange provided with a downturned portion engaging the: outer side face of the? can and an: out- W -ardlyextending portion located above the upper edge of the can to receive a closurereinoving tool.

, seat to form a seal inside: of the can, said closure also having a. marginal flange provided with adownturned portion engaging the outer" side face of the cannnd a rela- *tively' stiff outwardly extending portion folded on itself and located entirely above the upper edge of the can to receive a clo-- surerremoving tool. 3.-A sheet metal seat to form a seal inside "of the can, said closure also having a marginal flange provided With a two-ply d'ownturned portion en-gagingith-e outer" side face of'thecan and a relatively stiff outwardly extendmgpon- -tion having a plurality of folds merg1nginto said two-ply downturned portion and said. outwardly extending portion being 10- cated entirely above" the upper edge of the canto receive a closeure-removing tool".

4. A sheet meal can having an internal :annu'lar closure seat on the:inner facelof its upper edge' and an external annular closure can having an internal. annular closure seat on the inner face oiits upper edge, anda closure embracing said upper edge, said closure having an annular seal ing web engaging said internal annular 1 provided with a two-ply doW'nturneda-portion engaging the outer side face: of said annular bead and a relatively stiff outwardly extending portion having-aplurality of folds 80 engaging said external annular seat to form a seal outside of the can, and a portion of said marginal flange being bent upwardly so as to lie entireiyabove said upper edge of the can for the purpose set forth.

5. A sneet metal can having an internal annular bead at its upper edge, and a closure embracing said internal annular, bead,: said closure having a a 'downturned iinarginal flange engaging the outer face of said" an-a nular bead, and a downturned: annular 'web 6O engagingxthe inner face of said: annular bead to form an annular seal inside of the can, a portion ofsaid marginal flange being bent upwardly and: extended: outwardly f from said annular Web .so as: to lie entirely above said annular bead, and saidiiportion being, separated: from the'top of saidannular bead to provide a spacenfor" a closuresremov- 1mg tool."

6. 2A sheet metal canrhaving an'internal annular bead at its upper edge, and a closure embracing said internal annular bead, said closure having an annular sealing Webengagingthe inner side of: said annular bead;

to form an; annular: sealyinside of the. can,

said closure also having a marginaL-flange from the topaof said annularbead to pro n for a closure-removing vide an open space tool. 1 In testimony that Ificlaim the foregoing I hereuntoafiix my signature, i

FREDERICK WEsTnnBnoK. 

